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@article{Delmotte:2018,
author = {Delmotte, B and Keaveny, EE and Climent, E and Plouraboué, F},
journal = {IMA Journal of Applied Mathematics},
title = {Simulations of Brownian tracer transport in squirmer suspensions},
url = {http://hdl.handle.net/10044/1/57696},
year = {2018}
}

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TY  - JOUR
AB  - In addition to enabling movement towards environments with favourable living conditions, swim-ming by microorganisms has also been linked to enhanced mixing and improved nutrient uptake by theirpopulations.  Experimental studies have shown that Brownian tracer particles exhibit enhanced diffusiondue to the swimmers, while theoretical models have linked this increase in diffusion to the flows generated bythe swimming microorganisms, as well as collisions with the swimmers.  In this study, we perform detailedsimulations based on the force-coupling method and its recent extensions to the swimming and Brownianparticles to examine tracer displacements and effective tracer diffusivity in squirmer suspensions.  By iso-lating  effects  such  as  hydrodynamic  or  steric  interactions,  we  provide  physical  insight  into  experimentalmeasurements  of  the  tracer  displacement  distribution.   In  addition,  we  extend  results  to  the  semi-diluteregime  where  the  swimmer-swimmer  interactions  affect  tracer  transport  and  the  effective  tracer  diffusiv-ity no longer scales linearly with the swimmer volume fraction.Tracer dispersion - Squirmers - Activesuspensions - Simulations
AU  - Delmotte,B
AU  - Keaveny,EE
AU  - Climent,E
AU  - Plouraboué,F
PY  - 2018///
SN  - 0272-4960
TI  - Simulations of Brownian tracer transport in squirmer suspensions
T2  - IMA Journal of Applied Mathematics
UR  - http://hdl.handle.net/10044/1/57696
ER  -

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Dr Eric E Keaveny

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